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Radiocode clock by Circuit Services — view 1 of 1
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Clocks · Clock, radio-code

Radiocode clock by Circuit Services

DocumentedDocumented from the holding institution's catalogue record.
Maker / attribution
Circuit Services (maker)
Date
1978
Country of origin
Unrecorded in source
Object type
Clock, radio-code
Dimensions
140 mm x 220 mm x 120 mm
Holding institution
Royal Museums Greenwich
Accession / object no.
ZAA0239
Credit line
National Maritime Museum, Greenwich, London
Catalogue title (original)
Radiocode clock (English)

View the source record ↗ (opens another website in a new tab)Suggest a correction

Record summary

Held and catalogued by Royal Museums Greenwich (object number ZAA0239), this is a clock, radio-code by Circuit Services, dated 1978. The Atlas places it in the Quartz Revolution period (1969 – 1990) of its Clocks collection. Recorded dimensions: 140 mm x 220 mm x 120 mm. The record is illustrated with 1 photograph.

Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.

Catalogue description

Catalogue description — Royal Museums Greenwich

Reception, decoding and display unit receiving the MSF signal from Rugby. It has a half-inch LCD and back-up quartz clock, in a rectangular plastic box.

Historical context

Quartz Revolution (1969 – 1990)

Seiko's Astron begins mass quartz timekeeping; traditional industries contract sharply.

Quartz movements and digital displays made accurate clocks cheap and ubiquitous after the early 1970s. LED and LCD clocks, clock radios and radio-controlled clocks appeared, while traditional mechanical clockmaking contracted sharply in Germany, France and Britain.

Read the period in the timelineMore clocks from this periodEarlier: Modern Mechanical Horology

Atlas type guide

Domestic clocks

A clock combines four systems: a source of power (falling weight, coiled spring, or later electricity), a gear train that divides time, an escapement and oscillator that regulate it (foliot, pendulum or balance), and an indicating system of dial and hands or a bell. Its history runs from the large iron weight-driven clocks of the late thirteenth century to Renaissance spring-driven table clocks, the pendulum revolution of 1656, the factory clocks of the nineteenth century and electric and quartz clocks of the twentieth.

Domestic clocks also reflect regional furniture and decorative traditions — English longcase and bracket clocks, French pendules, Viennese regulators, Black Forest and American shelf clocks — and therefore record changing tastes as much as technical progress.

What to look for

  • How the clock is powered: weights, spring barrel, fusee, electric coil.
  • The oscillator: foliot, short pendulum, long seconds pendulum or balance.
  • Whether it strikes: hour only (count wheel) or hours and quarters (rack striking).
  • The maker or retailer's name on dial and movement, and any factory trademarks.
  • Signs of alteration — replaced dials, converted escapements, 'married' cases.

Dating clues

  • Before 1656 clocks used foliots or balances; after, most domestic clocks have pendulums.
  • Anchor escapements spread after c. 1670; minute hands became common at the same time.
  • Factory production in America and Germany transformed prices after c. 1840.

General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.

Read next:Verge escapementAnchor (recoil) escapementFoliot

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